x86_64: Utilize vector math functions w/o -fopenmp
Commit Message
Hi,
this patch adds GCC 6.* __attribute__((__simd__)) to declaration of
vector math functions to utilize them w/o -fopenmp.
Libmvec wike page will be updated appropriately with example of usage
(w/o -fopenmp will be needed -ftree-loop-vectorize).
2015-12-04 Andrew Senkevich <andrew.senkevich@intel.com>
* sysdeps/x86/fpu/bits/math-vector.h: Add __attribute__((__simd__)) to
vector functions declaration.
Is it Ok for trunk?
--
WBR,
Andrew
Comments
On Fri, 4 Dec 2015, Andrew Senkevich wrote:
> +# elif __GNUC_PREREQ (6,0)
> +/* W/o OpenMP use GCC 6.* __attribute__((__simd__)). */
> +# define __ATTR_SIMD_x86_64 __attribute__((__simd__("notinbranch")))
> +# undef __DECL_SIMD_cos
> +# define __DECL_SIMD_cos __ATTR_SIMD_x86_64
Why do you need to duplicate the list of functions? It would seem better
to define __DECL_SIMD_x86_64 with two different definitions depending on
the macros predefined by the compiler, then define all the
__DECL_SIMD_<func> macros if __DECL_SIMD_x86_64 has been defined.
# if defined _OPENMP && _OPENMP >= 201307
# define __DECL_SIMD_x86_64 ...
# elif __GNUC_PREREQ (6,0)
# define __DECL_SIMD_x86_64 ...
# endif
# ifdef __DECL_SIMD_x86_64
# undef __DECL_SIMD_cos
# define __DECL_SIMD_cos __DECL_SIMD_x86_64
etc.
b/sysdeps/x86/fpu/bits/math-vector.h
@@ -53,5 +53,32 @@
# undef __DECL_SIMD_powf
# define __DECL_SIMD_powf __DECL_SIMD_x86_64
+# elif __GNUC_PREREQ (6,0)
+/* W/o OpenMP use GCC 6.* __attribute__((__simd__)). */
+# define __ATTR_SIMD_x86_64 __attribute__((__simd__("notinbranch")))
+# undef __DECL_SIMD_cos
+# define __DECL_SIMD_cos __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_cosf
+# define __DECL_SIMD_cosf __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_sin
+# define __DECL_SIMD_sin __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_sinf
+# define __DECL_SIMD_sinf __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_sincos
+# define __DECL_SIMD_sincos __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_sincosf
+# define __DECL_SIMD_sincosf __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_log
+# define __DECL_SIMD_log __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_logf
+# define __DECL_SIMD_logf __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_exp
+# define __DECL_SIMD_exp __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_expf
+# define __DECL_SIMD_expf __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_pow
+# define __DECL_SIMD_pow __ATTR_SIMD_x86_64
+# undef __DECL_SIMD_powf
+# define __DECL_SIMD_powf __ATTR_SIMD_x86_64
# endif
#endif